The splitting of the Red Sea was far more than a simple rescue mission or a geographic crossing. It was a carefully calculated divine plan designed to educate the Israelites, magnify the miracle, and display God's profound kindness. The waters were deliberately sliced and cut apart to facilitate this event [מצודת ציון, ביאור שטיינזלץ].
How the sea was divided is viewed in different ways. The primary approach among commentators is that the sea was torn into twelve distinct paths, providing a separate route for each tribe so the Israelites would not have to cross in a chaotic, crowded manner. Another approach suggests the sea did not split directly from one side to the other. Instead, it parted in a semi-circle. The Israelites entered the water from the desert and exited on the exact same shoreline, returning to the very same desert [רד״ק, מאירי].
This semi-circular route raises a natural question: if the Israelites exited on the same side they entered, why go into the sea at all? The answer is that the crossing was never meant just for travel. It was a deliberate trap designed to drown the Egyptians and reveal God's greatness [רד״ק, מאירי]. God could have saved the Israelites through other means, but He intentionally hardened the hearts of the Egyptians and led the Israelites to the sea specifically to destroy their pursuers [מלבי״ם].
The division of the sea into multiple paths also served a vital educational purpose to protect the people's faith. As they left Egypt, a member of the tribe of Ephraim carried an idol. Had the entire nation crossed together on a single path, some might have mistakenly believed the idol was responsible for the miracle. To prevent this error, God created separate paths. To further prove the idol had no power, God placed the tribe of Ephraim on the exact same path as the tribe of Manasseh. This made it clear that the sea parted in the merit of Manasseh and the other faithful tribes, entirely discrediting the idol and preventing false worship [אלשיך].
Ultimately, the event was an act of profound divine kindness on multiple levels. God altered the laws of nature to spare the Israelites from facing the dangers of war on alternative routes [רד״ק]. Beyond this physical protection, God also provided deep psychological comfort. He could have miraculously allowed the Israelites to walk directly through the water itself without drowning, but such an experience would have caused immense fear and sadness. By fully separating the waters and turning the seabed into dry land, God spared them from anxiety, allowing them to cross in complete safety and peace [אבן עזרא].